easyx放烟花加爆炸声

以下是使用EasyX库实现放烟花和爆炸声的示例代码：

#include <graphics.h>
#include <conio.h>
#include <ctime>
#include <cmath>
#include <mmsystem.h>

#pragma comment(lib, "winmm.lib")

const int SCREEN_WIDTH = 800;
const int SCREEN_HEIGHT = 600;
const int MAX_FIREWORKS = 10;
const int MAX_PARTICLES = 200;
const int FIREWORKS_INTERVAL = 5000;

struct Particle {
    float x, y;
    float vx, vy;
    float ax, ay;
    float life;
    COLORREF color;
};

struct Firework {
    float x, y;
    float vx, vy;
    float ax, ay;
    float life;
    COLORREF color;
    int particlesCount;
    Particle particles[MAX_PARTICLES];
};

int main() {
    initgraph(SCREEN_WIDTH, SCREEN_HEIGHT);

    srand(time(NULL));

    Firework fireworks[MAX_FIREWORKS];

    int lastFireworkTime = timeGetTime();
    int lastParticleUpdateTime = timeGetTime();

    while (true) {
        cleardevice();

        // 更新烟花
        int currentTime = timeGetTime();
        if (currentTime - lastFireworkTime > FIREWORKS_INTERVAL) {
            lastFireworkTime = currentTime;

            // 随机生成烟花
            for (int i = 0; i < MAX_FIREWORKS; i++) {
                fireworks[i].x = rand() % SCREEN_WIDTH;
                fireworks[i].y = SCREEN_HEIGHT;
                fireworks[i].vx = 0;
                fireworks[i].vy = -200 - rand() % 200;
                fireworks[i].ax = 0;
                fireworks[i].ay = 400;
                fireworks[i].life = 2.0f + rand() % 3;
                fireworks[i].color = RGB(rand() % 256, rand() % 256, rand() % 256);
                fireworks[i].particlesCount = rand() % MAX_PARTICLES;
                for (int j = 0; j < fireworks[i].particlesCount; j++) {
                    fireworks[i].particles[j].x = fireworks[i].x;
                    fireworks[i].particles[j].y = fireworks[i].y;
                    float angle = (float)(rand() % 360) / 180.0f * 3.1415926f;
                    float speed = 100.0f + rand() % 100;
                    fireworks[i].particles[j].vx = speed * cos(angle);
                    fireworks[i].particles[j].vy = speed * sin(angle);
                    fireworks[i].particles[j].ax = 0;
                    fireworks[i].particles[j].ay = 400;
                    fireworks[i].particles[j].life = 1.0f + (float)(rand() % 10) / 10.0f;
                    fireworks[i].particles[j].color = fireworks[i].color;
                }
            }

            // 播放爆炸声音
            PlaySound(TEXT("explosion.wav"), NULL, SND_FILENAME | SND_ASYNC);
        }

        // 更新粒子
        float deltaTime = (currentTime - lastParticleUpdateTime) / 1000.0f;
        for (int i = 0; i < MAX_FIREWORKS; i++) {
            if (fireworks[i].life > 0) {
                fireworks[i].vx += fireworks[i].ax * deltaTime;
                fireworks[i].vy += fireworks[i].ay * deltaTime;
                fireworks[i].x += fireworks[i].vx * deltaTime;
                fireworks[i].y += fireworks[i].vy * deltaTime;
                fireworks[i].life -= deltaTime;

                for (int j = 0; j < fireworks[i].particlesCount; j++) {
                    if (fireworks[i].particles[j].life > 0) {
                        fireworks[i].particles[j].vx += fireworks[i].particles[j].ax * deltaTime;
                        fireworks[i].particles[j].vy += fireworks[i].particles[j].ay * deltaTime;
                        fireworks[i].particles[j].x += fireworks[i].particles[j].vx * deltaTime;
                        fireworks[i].particles[j].y += fireworks[i].particles[j].vy * deltaTime;
                        fireworks[i].particles[j].life -= deltaTime;
                    }
                }
            }
        }
        lastParticleUpdateTime = currentTime;

        // 绘制烟花
        for (int i = 0; i < MAX_FIREWORKS; i++) {
            if (fireworks[i].life > 0) {
                setlinecolor(fireworks[i].color);
                setfillcolor(fireworks[i].color);
                fillcircle(fireworks[i].x, fireworks[i].y, 5);

                for (int j = 0; j < fireworks[i].particlesCount; j++) {
                    if (fireworks[i].particles[j].life > 0) {
                        setlinecolor(fireworks[i].particles[j].color);
                        setfillcolor(fireworks[i].particles[j].color);
                        fillcircle(fireworks[i].particles[j].x, fireworks[i].particles[j].y, 2);
                    }
                }
            }
        }

        Sleep(10);
    }

    closegraph();

    return 0;
}

此示例代码使用随机生成的方式产生烟花，每个烟花会产生若干个粒子，随机生成粒子的速度和方向。烟花会在一定时间后消失，粒子也会在一定时间后消失。同时，播放了一个爆炸声音（需要放在与可执行文件同一目录下的名为“explosion.wav”的音频文件）。